Is ABCD1 p.Arg8fs (c.22dup) pathogenic?

ABCD1 p.Arg8fs (c.22dup) is classified Likely pathogenic in ABCD1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2023-04-24). Ultra-rare (gnomAD MAF 1.015e-06); Associated with adrenoleukodystrophy.

What condition is associated with ABCD1 p.Arg8fs (c.22dup)?

ABCD1 p.Arg8fs (c.22dup) is associated with adrenoleukodystrophy (ClinVar).

How common is ABCD1 p.Arg8fs (c.22dup) in the general population?

ABCD1 p.Arg8fs (c.22dup) is ultra-rare (gnomAD MAF 1.015e-06) (gnomAD).

How is X-linked adrenoleukodystrophy inherited?

Typically X-linked dominant (Orphanet). A genetic counselor can assess individual risk for a family.

ABCD1 p.Arg8fs

c.22dup · rs2148388526 · VCV2572606

Likely pathogenic Multiple submitters

Classification

Likely pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

Consequence

frameshift

predicted LoF

gnomAD v4.1

Rare

ultra-rare (gnomAD MAF 1.015e-06)

Conditions

adrenoleukodystrophy

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	frameshift	predicted loss-of-function in a haploinsufficient gene (ClinGen)
NMD	predicted	premature termination codon in exon 1 of 10
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP -2	GERP -3.1

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

dbSNP / gnomAD

Global frequency 0.000102% via dbSNP · ultra-rare

No ancestry breakdown or filtering allele frequency is available for this variant, so BA1/BS1 cannot be assessed from this figure alone.

Variant & gene context

Gene: ABCD1
Protein: p.Arg8fs
Coding: c.22dup
MANE Select: NM_000033
dbSNP: rs2148388526
Type: Duplication
Location: chrX:153725284 (GRCh38)
Structure: AlphaFold pLDDT 81.58 · 14 PDB

Full ABCD1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

adrenoleukodystrophy — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For X-linked adrenoleukodystrophy (Orphanet):

Inheritance: X-linked dominant
Onset: Adolescent, Adult, Childhood, Elderly
Prevalence: 1-9 / 1 000 000 (Israel)

Similar variants

ABCD1 p.Arg8Trp Uncertain significance ★★ ⚠ same residue
ABCD1 p.Arg8= Uncertain significance ★ same residue
ABCD1 p.Arg80_Leu82dup Pathogenic ★★ same condition
ABCD1 p.Arg85fs Pathogenic ★★ same condition
ABCD1 p.Asn13fs Pathogenic ★★ same condition
ABCD1 p.Glu359fs Pathogenic/Likely pathogenic ★★ same condition
ABCD1 p.Thr483fs Pathogenic/Likely pathogenic ★★ same condition
ABCD1 p.Ala443fs Pathogenic ★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/abcd1-p-arg8fs (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown